package cn.itcast.day05.demo04;

public class Demo03Math {
    public static void main(String[] args) {
        System.out.println(Math.abs(-15.5));
        System.out.println(Math.ceil(15.5));
        System.out.println(Math.floor(15.5));
        System.out.println(Math.round(15.5));
        System.out.println(Math.PI);
    }
}
